"So far, there have been no explanations from our US colleagues on this topic," he said, TASS reported.
Earlier, Trump said he had instructed the Pentagon to resume nuclear weapons testing immediately, citing the fact that other countries were already doing so.
Trump did not specify what kind of tests he was referring to or whether this included the detonation of nuclear warheads.
In turn, Peskov emphasized that Russia and China have not resumed nuclear testing as both countries are committed to their obligations in this area.
He added that Moscow awaits Washington’s explanations.